Dimensions for ElastiCache Metrics

All ElastiCache metrics use the AWS/ElastiCache namespace and provide
metrics for a single dimension, the CacheNodeId, which is the
automatically-generated identifier for each cache node in the cache cluster. You can
find out what these values are for your cache nodes by using the
DescribeCacheClusters API or describe-cache-clusters
command line utility. For more information, see
DescribeCacheClusters
in the Amazon ElastiCache API Reference and
describe-cache-clusters in the AWS CLI Command Reference.

Each metric is published under a single set of dimensions. When retrieving
metrics, you must supply both the CacheClusterId and CacheNodeId dimensions.